<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../vue.js"></script>
</head>

<body>
    <div id="app">
        <button @click="fullName='Li fiefei'">可写</button>
        <h1>全名{{fullName}}</h1>
    </div>
    <script>
        Vue.config.productionTip = false;
        
        const vm = new Vue({
            el: "#app",
            data() {
                return {
                    firstName: "Wang",
                    lastName: "zhongwang",
                }
            },
            //计算属性的可读可写
            computed:{
                fullName: {
                    get() {
                        return this.firstName + " " + this.lastName;
                    },
                    set(val) {
                        this.firstName = val.split(' ')[0];
                        this.lastName = val.split(' ')[1];
                    }
                }
            }
        })
</script>
</body>

</html>